Is there a timeout or waiting time for Serial Ports?

Question

I'm working with a measurement system that is connected to my computer trough a com cable.
Everything is fine but in a different time intervall under the same conditions the device stops sending codes...
I dunno why but may you can help me.
Here's my connection

 // Set the port's settings
                    comport.BaudRate = 9600;
                    comport.DataBits = 7;
                    comport.Parity = Parity.Even;
                    comport.Handshake = Handshake.XOnXOff;
                    comport.RtsEnable = true;
                    comport.ReadTimeout = 500;
                    comport.WriteTimeout = 500;
                    comport.PortName = portname;

Is there maybe a timeout or a datalimit or so?
So it stops sending ?

Edit: I'm sending codes like 10 with a 1 second waiting time between every. Maybe to short?

Sascha B · Answer

hmm ok. Thanks In the meantime I made a workaround. I catched the place where the failure sending code starts and put it in a try and catch area. The catch area is now filled with a disconnect and connect (reconnect) command. An it works! Sadly XD Dunno why but the device is after a crash or timeout not aviable until I reconnect it. So solved :)

Ankur · Answer

Hello Sacha i think writetimeout property may be the culprit. try observing failures if their occurrence shows a pattern then it must be the writetimeout property thanks and regards ankur malik